This preview does give us more time with Daenerys Targaryen and her very-grown-up dragons as she battles "injustice." We also get a glimpse of a conversation between Cersei Lannister and Oberyn Martell.

"What good is power if you cannot protect the ones you love?" Cersei questions.

Lena Headey, who plays Cersei, did reveal to Vulture that the reunion between her and her brother/lover Jaime Lannister will be a particularly gripping moment this season.

It's horrendous. It's kind of crazy. Interesting to film, because we were ... she's in deep pain, and he wants her, because he missed her, and he needs to know she wants him. It's just a weird, fucked-up moment. It's quite mad!

Meanwhile, Sansa is haunted by the Red Wedding and Jon Snow's world has fallen apart. Will he turn back to the Wall or finally seek justice for the Starks?

But the biggest question remains: Will we all last until April 6, when winter finally returns on HBO?

4. The Wall is inspired by Hadrian’s Wall of Roman Britain.

Martin visited the wall in 1981, and kept it in mind when creating the 700-foot-high wall of solid ice that protects the Seven Kingdoms.

"Of course fantasy is the stuff of bright colors and being larger than real life, so my Wall is bigger and considerably longer and more magical,” he told SF Site. "And, of course, what lies beyond it has to be more than just Scots."

5. The three middle Stark kids have a penchant for singing the GoT theme song.

6. King Joffrey may never act again.

Last year, Jack Gleeson, who plays King Joffrey, announced that he plans to give up acting after Game of Thrones wraps up because he doesn’t enjoy it as much as he used to. He also wants to make way for other pursuits, including humanitarianism -- last year he traveled to Haiti to help the poor.

"I started acting when I was eight, and really, really loved it," Gleeson told a class at University College Dublin. "But I think when it became less of a recreation and more of a profession, it kind of put more pressure on the acting itself and made it a tiny bit less enjoyable.”

9. There's a Game of Thrones-themed burlesque show.

"Inspired by the stories and people of Westeros, this show is set to light a fire in people’s hearts hotter than wildfire," says live entertainment venue The Vanguard. There’s even a "meal and show" package, complete with a GoT-themed menu.

In one of the series' most unforgettable scenes, a pregnant Daenerys consumes a raw horse heart to prove herself to the Dothraki people.

“That was one of those amazing scenes that you get as an actor that there’s just no acting required -- at all,” actor Emilia Clarke told Vulture. "It was disgusting! They promised me that it would taste similar to a gummy bear and it definitely didn’t."

Apparently it tasted like bleach. She describes it as being similar to congealed jam with fake blood-sugar and dried pasta -- for added texture. Yum.

"[Fiction] has to have a truth at the core of it," Martin told The Wall Street Journal. "You’re still writing about people, you’re writing about the human condition. I often quote Faulkner, who said in his speech after winning the Nobel Prize that ‘the human heart in conflict with itself’ is the only thing worth writing about. And I’ve always agreed with that. It’s true no matter what genre you’re writing in, even if there are dragons in it or it’s about a private detective or a western gunslinger, it’s still ultimately about the human heart in conflict with itself or it’s not worth reading."

He also still does research the old-fashioned way -- with books. In a modest second home just down the street from his house, he fills two bedrooms with books.

Image: Charles Sykes/Associated Press

13. He also lives a totally normal life...

...Except that his mailbox is a castle, complete with its own drawbridge. But other than that, his life in Santa Fe, N.M., is nothing fancy. He drives an old Mazda, dines at local restaurants, is friendly with fans, regularly updates his blog and still allows his contact information to be in the Yellow Pages.

A younger GRRM wasn’t so different -- he had pet turtles, and was editor of his high school paper and captain of the chess team.

Image: Nick Briggs/HBO/Associated Press

14. The producers asked the Language Creation Society to construct the Dothraki language.

Linguist David Peterson started with the culture of the Dothraki people and created almost 2,000 words even before translating the first season’s scripts.

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